Bump pronto from 0.11.3 to 0.11.4

Bumps [pronto](https://github.com/prontolabs/pronto) from 0.11.3 to 0.11.4.
- [Release notes](https://github.com/prontolabs/pronto/releases)
- [Changelog](https://github.com/prontolabs/pronto/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prontolabs/pronto/compare/v0.11.3...v0.11.4)

---
updated-dependencies:
- dependency-name: pronto
  dependency-version: 0.11.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -96,7 +96,7 @@ group :development do
   gem "faraday-retry", "~> 2.3.1", require: false
   gem "htmlbeautifier", "~> 1.4.3", require: false
   gem "mdl", "~> 0.13.0", require: false
-  gem "pronto", "~> 0.11.2", require: false
+  gem "pronto", "~> 0.11.4", require: false
   gem "pronto-erb_lint", "~> 0.1.6", require: false
   gem "pronto-eslint", "~> 0.11.1", require: false
   gem "pronto-rubocop", "~> 0.11.6", require: false